Australia defender Ivan Franjic has received a boost in his fight to be fit for the Asian Cup final after scans cleared him of serious injury, a report said on Thursday.

Franjic finished Tuesday's semi-final against UAE limping and, as the only right-back in the Socceroos squad, he is a key man for Saturday's final against South Korea.

The 27-year-old was cleared of a serious hip problem, Australia's AAP news agency said, but coach Ange Postecoglou will await medical advice before selecting his team.

Franjic has played every minute of Australia's campaign and will need to be at or near his best against a pacy South Korean attack led by Son Heung-Min.

If Franjic is not passed fit, Postecoglou will have to rejig his defence with Trent Sainsbury the likely choice to move over from centre-half.

"It doesn't bother me. They can put me in goal if they want to. I'm not fussed, I'll go out there and do the job that I'm told," said Sainsbury.

And the coach has also been upbeat on Franjic's chances.

"It's a final of a major tournament and unless they chop his leg off he'll put his hand up to play," he said after Tuesday's game.